Automatic lathe attachment.



Patented Dec. 4, |900.

' 2TH vlzlfm,"V

J. B. CLYNE. AUTUMATIC LATHE ATTACHMENT.

Illlllla (Application led July 17, 1899.)

Nirnn STATES Arnett Prion.

JAMES B. CLYNE, OF CLEVELAND, OHIO, A SSIGNOR TO TIIE CLEVELAND y MACHINE SCREV COMPANY, OF SAME PLACE.

AUTOMATIC LATI-INE` ATTACH lVl ENT.

SPECIFICATION forming part of Letters Patent No. 663,013, dated December 4, 1900.

Application filed July 17, 1899. Serial No. '724,096- (No model.)

My invention relates to attachments for au tomatic lathes, and has for its object the provision of means for drilling the blank with drills which require a much higher rate of speed for proper working than it is practicable to impart to the blank itself While holding the drill stationary.

Said invention consists of means hereinaf-4 ter fully described.

The annexed drawing` and the following description set forth in detail certain mechan- `ism embodying the invention, such disclosed means constituting but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing the figure represents an axial section of a turret of a lathe which is automatically and periodically advanced, retracted, and rotated to bring successively different tools into operati-on upon the metal blank, the end of the lathe headstock being shown in elevation, with certain other parts shown in elevation, said tools, With the exception of the drill, being omitted from the turret and embodying my invention.

It is required, among other operations to be performed upon the blank, to drill a hole of small diameter into the metal blank, Which'is gripped and rotated in the head-stock A of the lathe.

In one of the tool-holding bores b, intermediate of the axis and periphery of the turret B, is placed and suitably secured a bearing or sleeve c, in which is journaled a spindle C, suitably secured against longitudinal displacement. is secured to the outer end of said spindle for securing the drill. A pinion D, of suitable dimension, is also secured to the outer end of said spindle and meshes with a second pinion axis coincident therewith.

A suitable chuck or other means E, secured to and coaxial with a driving-spindle E', journaled in the turret and having its As shown, the spindle() and the gear Dare carried solely 'by the sleeve o, being held through the various connections against longitudinal movement therein. This construction therefore forms a substantially unitary structure having stationary and rotatable parts. This is important for several reasons, among which may be mentioned the fact that the securing of the sleeve in its bore holds the gear D from any tendency of becoming disengaged from the pinion E, and yet allows of such a disengagement whenever desired by a simple removal of the sleeve from the bore, the entire unitary structure being bodily removable from the bore b, and without disturbing the position of the pinion E on its spindle or disengaging any other attachments carried by the turret. Suitable means, such asa sheave c, are .secured to said spindle, whereby it may be driven independently of the turret. The drill may vhence be driven by the gearing intermediate of its spindle and the driving-spindle at the desired speed.

In operation the turret is periodically advanced, retracted, and rotated, as is usual in this class of machines, one such advance movement causing the rapidly-rotating drill to advance and perform its function.

rlhe rotation of the drill may be continuous or suitable mechanism may be employed to rotate it at such times only as it is advanced to perform its function, mechanism for the purpose being well known by those skilled in the art.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards themechanism herein disclosed, provided the means covered by anyone of the following claims be employed.

I therefore particularly point out and distinctly claim as my invention- IOO said tool-holding bores, a spindle mounted in said sleeve, having its axis parallel with said turret-axis and having a gear secured to its outer end, and a pinion secured to the outer end of said first-named spindle meshing With said gear, said sleeve, spindle and gear being removable bodily as a unitary structure, Without disturbing the position of said pinion, substantially as set forth.

2. The combination of a turret having a plurality of tool-holding bores located equidistantly from its axis, a spindle journaled in said turret and'having its axis coincident with the turret-axis and provided With a drivingpulley formed or secured thereon, a sleeve seated in and removable from one of said tool-holding bores, a spindle mounted in said sleeve, having its axis parallel with said turret-axis and having a gear secured to its outer end, a pinion secured to said first named spindle meshing with said gear, and a toolholder operatively connected With or secured to said last-named spindle, said sleeve, spindle and gear being removable bodily as aV unitary structure Without disturbing the position of said pinion,substantially as set forth.

8. A The combination with a rotating spindle,

having a pinion at one end; and a turret mounted axially to freely rotate thereon, and having tool-holding-bores; of a spindle-carrying sleeve removably secured in one of said bores, said sleeve forming the sole support for a spindle and a gear for driving said spindle, said sleeve, spindle Aand gear forming a substantially unitary structure and removable bodily from said bore, said gear and said ypinion having normally a cooperating rela- J. B. OLYNE.

Attest:

D. T. DAvIEs, A. E. MERKEL. 

